import pygame.font

class Scoreboard:
    """显⽰得分信息的类"""
    def __init__(self, ai_game):
        """初始化显⽰得分涉及的属性"""
        self.screen = ai_game.screen
        self.screen_rect = self.screen.get_rect()
        self.settings = ai_game.settings
        self.stats = ai_game.stats
         # 显⽰得分信息时使⽤的字体设置
        self.text_color = (30, 30, 30)
        self.font = pygame.font.SysFont(None, 48)
        # 准备初始得分图像
        self.prep_score()
        self.prep_high_score()

    def prep_score(self):
        """将得分渲染为图像"""
        rounded_score = round(self.stats.score, -1)
        score_str = f"{rounded_score:,}"
        self.score_image = self.font.render(score_str, True, self.text_color, self.settings.bg_color)
        # 在屏幕右上⾓显⽰得分
        self.score_rect = self.score_image.get_rect()
        self.score_rect.right = self.screen_rect.right - 20
        self.score_rect.top = 20

    
    def show_score(self):
        """在屏幕上显⽰得分"""
        self.screen.blit(self.score_image, self.score_rect)
    
    def prep_high_score(self):
        """将最⾼分渲染为图像"""
        high_score = round(self.stats.high_score, -1)
        high_score_str = f"{high_score:,}"
        self.high_score_image = self.font.render(high_score_str,True, self.text_color, self.settings.bg_color)
        # 将最⾼分放在屏幕顶部的中央
        self.high_score_rect = self.high_score_image.get_rect()

        self.high_score_rect.centerx = self.screen_rect.centerx
        self.high_score_rect.top = self.score_rect.top
    
    def show_score(self):
        """在屏幕上显⽰当前得分和最⾼分"""
        self.screen.blit(self.score_image, self.score_rect)
        self.screen.blit(self.high_score_image, self.high_score_rect)
    
    def check_high_score(self):
        """检查是否诞⽣了新的最⾼分"""
        if self.stats.score > self.stats.high_score:
            self.stats.high_score = self.stats.score
            self.prep_high_score()

    